java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:30:16,607 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:30:16,609 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:30:16,621 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:30:16,622 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:30:16,623 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:30:16,624 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:30:16,626 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:30:16,628 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:30:16,628 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:30:16,629 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:30:16,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:30:16,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:30:16,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:30:16,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:30:16,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:30:16,634 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:30:16,636 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:30:16,638 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:30:16,640 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:30:16,641 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:30:16,642 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:30:16,645 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:30:16,654 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:30:16,669 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:30:16,669 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:30:16,670 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:30:16,671 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:30:16,671 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:30:16,671 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:30:16,671 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:30:16,672 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:30:16,672 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:30:16,672 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:30:16,672 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:30:16,673 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:30:16,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:30:16,674 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:30:16,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:30:16,674 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:30:16,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:30:16,674 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:30:16,675 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:30:16,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:30:16,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:30:16,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:30:16,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:30:16,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:30:16,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:30:16,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:30:16,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:30:16,676 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:30:16,677 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:30:16,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:30:16,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:30:16,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:30:16,677 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:30:16,678 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:30:16,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:30:16,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:30:16,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:30:16,749 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:30:16,749 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:30:16,750 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-10-24 21:30:16,812 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48c3f37e8/575445cf75f44db382e3bc2e6ec86b13/FLAG66ad2552f [2018-10-24 21:30:17,642 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:30:17,643 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-10-24 21:30:17,685 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48c3f37e8/575445cf75f44db382e3bc2e6ec86b13/FLAG66ad2552f [2018-10-24 21:30:17,707 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48c3f37e8/575445cf75f44db382e3bc2e6ec86b13 [2018-10-24 21:30:17,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:30:17,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:30:17,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:30:17,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:30:17,734 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:30:17,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:30:17" (1/1) ... [2018-10-24 21:30:17,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:17, skipping insertion in model container [2018-10-24 21:30:17,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:30:17" (1/1) ... [2018-10-24 21:30:17,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:30:17,947 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:30:19,778 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:30:19,783 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:30:20,502 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:30:20,539 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:30:20,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20 WrapperNode [2018-10-24 21:30:20,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:30:20,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:30:20,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:30:20,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:30:20,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:20,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:30:21,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:30:21,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:30:21,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:30:21,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... [2018-10-24 21:30:21,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:30:21,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:30:21,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:30:21,488 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:30:21,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:30:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:30:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:30:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:30:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:30:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:30:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:30:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:30:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:30:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:30:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:30:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:30:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:30:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:30:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:30:32,572 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:30:32,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:30:32 BoogieIcfgContainer [2018-10-24 21:30:32,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:30:32,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:30:32,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:30:32,587 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:30:32,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:30:17" (1/3) ... [2018-10-24 21:30:32,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4756ed02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:30:32, skipping insertion in model container [2018-10-24 21:30:32,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:20" (2/3) ... [2018-10-24 21:30:32,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4756ed02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:30:32, skipping insertion in model container [2018-10-24 21:30:32,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:30:32" (3/3) ... [2018-10-24 21:30:32,591 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label17_true-unreach-call.c [2018-10-24 21:30:32,603 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:30:32,617 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:30:32,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:30:32,714 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:30:32,714 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:30:32,714 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:30:32,715 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:30:32,715 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:30:32,715 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:30:32,715 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:30:32,715 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:30:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:30:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 21:30:32,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:32,791 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:30:32,794 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:32,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:32,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1075822924, now seen corresponding path program 1 times [2018-10-24 21:30:32,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:32,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:32,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:32,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:32,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:33,373 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:30:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:30:33,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:30:33,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:30:33,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:33,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:30:33,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:30:33,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:30:33,537 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 21:30:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:30:44,601 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-10-24 21:30:44,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:30:44,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-24 21:30:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:30:44,640 INFO L225 Difference]: With dead ends: 3087 [2018-10-24 21:30:44,641 INFO L226 Difference]: Without dead ends: 1965 [2018-10-24 21:30:44,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:30:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-10-24 21:30:44,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-10-24 21:30:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 21:30:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-10-24 21:30:44,844 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 40 [2018-10-24 21:30:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:30:44,845 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-10-24 21:30:44,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:30:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-10-24 21:30:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 21:30:44,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:44,860 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:30:44,860 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:44,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1534967006, now seen corresponding path program 1 times [2018-10-24 21:30:44,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:44,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:44,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:44,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:44,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:30:45,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:30:45,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:30:45,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:45,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:30:45,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:30:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:30:45,204 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-10-24 21:31:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:04,383 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-10-24 21:31:04,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:31:04,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 21:31:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:04,416 INFO L225 Difference]: With dead ends: 5634 [2018-10-24 21:31:04,416 INFO L226 Difference]: Without dead ends: 3681 [2018-10-24 21:31:04,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:31:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-10-24 21:31:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-10-24 21:31:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-10-24 21:31:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-10-24 21:31:04,560 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 117 [2018-10-24 21:31:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:04,561 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-10-24 21:31:04,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:31:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-10-24 21:31:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 21:31:04,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:04,575 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:31:04,575 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:04,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:04,576 INFO L82 PathProgramCache]: Analyzing trace with hash -378735212, now seen corresponding path program 1 times [2018-10-24 21:31:04,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:04,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:04,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:04,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:04,578 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:04,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:04,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:31:04,877 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:04,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:31:04,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:31:04,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:31:04,878 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-10-24 21:31:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:16,332 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-10-24 21:31:16,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:31:16,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 21:31:16,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:16,386 INFO L225 Difference]: With dead ends: 12385 [2018-10-24 21:31:16,386 INFO L226 Difference]: Without dead ends: 8741 [2018-10-24 21:31:16,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:31:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-10-24 21:31:16,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-10-24 21:31:16,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-10-24 21:31:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-10-24 21:31:16,667 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 136 [2018-10-24 21:31:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:16,668 INFO L481 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-10-24 21:31:16,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:31:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-10-24 21:31:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 21:31:16,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:16,676 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:31:16,677 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:16,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash 279720828, now seen corresponding path program 1 times [2018-10-24 21:31:16,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:16,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:16,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:16,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:16,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:16,985 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:31:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:17,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:17,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:31:17,191 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:17,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:31:17,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:31:17,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:31:17,193 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-10-24 21:31:30,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:30,083 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-10-24 21:31:30,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:31:30,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-24 21:31:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:30,194 INFO L225 Difference]: With dead ends: 22909 [2018-10-24 21:31:30,195 INFO L226 Difference]: Without dead ends: 14231 [2018-10-24 21:31:30,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:31:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-10-24 21:31:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-10-24 21:31:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-10-24 21:31:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-10-24 21:31:30,651 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 148 [2018-10-24 21:31:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:30,652 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-10-24 21:31:30,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:31:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-10-24 21:31:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 21:31:30,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:30,660 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:31:30,661 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:30,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:30,661 INFO L82 PathProgramCache]: Analyzing trace with hash 407433476, now seen corresponding path program 1 times [2018-10-24 21:31:30,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:30,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:30,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:30,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:30,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 66 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:31:30,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:31:30,852 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:31:30,853 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-24 21:31:30,856 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2847], [2849], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:31:30,935 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:31:30,935 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:31:36,104 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:31:36,106 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:31:36,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:36,207 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:31:40,299 INFO L232 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 71.58% of their original sizes. [2018-10-24 21:31:40,299 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:31:41,759 INFO L413 sIntCurrentIteration]: We have 211 unified AI predicates [2018-10-24 21:31:41,760 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:31:41,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:31:41,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 21:31:41,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:41,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 21:31:41,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 21:31:41,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:31:41,762 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-10-24 21:32:06,477 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown